I've just downloaded OmniPlan -- have never used project management software, so this question is probably very basic. I need to plan multiple projects that will all requiring time from my 3 workers and myself. Each person's time per week is obviously a finite number. How can OmniPlan know that it already alloted 3 hours for Monday to Gail for Project A so it only has 5 remaining "Gail" hours on Monday for Project B?